A/N: Spoilers ahead for the #THINMAN episode So I watched the #THINMAN episode and thought the story about being on the roof fit in, so I decided to include it seeing as it was chronological and everything.

'Come on, Sam, it's totally safe!' Dean called up to the roof from where he had landed in a pile of leaves at the bottom of the shed.

'You sure, Dean?' Sam asked, head coming into view as he looked down. His face was partially covered by a batman mask, but it was obvious he was worried.

'Positive,' replied the elder Winchester, standing up and spinning around in a circle, arms outstretched in a display of his continued good health.

'Okay then,' said Sam cautiously before he moved right to the edge of the shed roof. Dean watched from the side as his brother jumped down, black cape whistling in the air around him. He heard the unmistakeable crunch of bone as Sam landed awkwardly on the ground with a cry, leaves whirling in the air around him and blanketing his black costume.

'Sammy!' Dean called out hurriedly, rushing over to the pile of dead leaves. 'Sam, are you alright?'

'My arm really hurts,' came the teary reply as the orange sea was parted by the young Winchester. 'I don't think I can move it.'

Dean took the extended limb gently in his hands, examining it carefully. Sam winced in discomfort, and Dean apologised.

'I think it's broken,' he concluded after a moment of consideration. 'You're doing really well.'

'What are we gonna do?'

'Dad's not gonna be happy,' Dean murmured to himself as he took of his cape and used it to make a makeshift splint for Sam's arm. 'I'll take you to the ER nearby.' He went into the unlocked shed and dug out his bike, saddling it and motioning for Sam to join him. 'Get on the handlebars.'

Sam did as he was told, and Dean held onto his brother tightly as he biked to the nearby hospital. When they got in, he went straight to the desk and explained the situation. Sam was admitted to a room almost immediately, because it wasn't a really busy night at the ER it seemed, and Dean was let in with him.

An X-ray confirmed that Sam's arm was indeed broken, and they were told he'd have to have a cast on it to help it heal. Sam seemed okay with it, but Dean wasn't sure how John would react to it. He decided to call Cas and ask for help.

'Cas?' Dean's voice rang clear in Castiel's head. 'Cas, I need you. Sam's hurt. It's not serious, but I was wondering if you could help.'

Without thinking, Cas immediately flew down to earth, where Dean was. He took on the form he had done before, not wanting to waste a second having to find another one, and was at the ER in a second.

'Cas!' Dean called out his name and hands were wrapping around his frame as he was hugged by the Winchester. 'You came.'

'I will always answer when you call,' Cas replied. He turned to the bed, where Sam was sat up reading a book. 'Hello, Sam.'

'Hey Cas,' Sam grinned toothily. 'Can you fix my arm? I broke it.'

'Why are you dressed like that?' asked the angel, turning to look between the two brothers.

'It was my idea,' Dean admitted. 'I wanted to see if we could fly.'

Cas chuckled. 'You look very fetching.'

'Thanks,' smiled the elder Winchester, blushing.

'You look very heroic too, Sam.'

'Thanks,' smiled Sam again. 'Now can you fix the broken bone in my arm?'

'Of course I can.' Cas moved to sit beside Sam, and took his arm gently. 'I warn you, this may hurt slightly. Tell me if you want me to stop.'

'I will,' Sam promised, nodding to show he had understood.

Cas let his powers run through his fingers and into Sam's arm, healing the fracture. Sam winced slightly, but that was the only sign of discomfort he made.

When he was done, Cas moved away again. 'Well done; you were very brave,' he assured Sam, who blushed modestly at the compliment.

'Thanks, Cas,' Dean said. He'd watched the whole thing, and he pulled Cas in for a quick hug before he moved back.

'I should return to Heaven now,' Cas informed them sadly.

'Bye, then,' sighed Dean reluctantly.

Cas said one last goodbye to them both before flying back to Heaven.

A/N: Okay so I've never actually broken a bone so I don't know hospital procedure for these things, please excuse the inaccuracies